One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,6)(3,7,8,5)(9,10,12,11,13,15,16,14)(20,28)(23,29)(27,32)(30,31)(10,14)(11,15)(12,16)(17,18,21,24)(19,25,26,22)(20,29,28,23)(27,30,32,31)(1,3,4,8)(2,5,6,7)(17,19)(18,22)(20,27)(21,26)(23,30)(24,25)(28,32)(29,31)(9,11,16,10,13,14,12,15)(19,26)(22,25)(27,32)(30,31)(17,20,21,28)(18,23,24,29)(19,27,26,32)(22,30,25,31)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.